I am using DWG trueview (by AutoCAD) to look at DWG files. Could it be the problem?

You’re not using a properly configured export scheme when you save to DWG. If you model is in Inches, try CAM Imperial. If millimeters, try CAM Metric. Both of these have the option to “Simplify lines and arcs” enabled with an appropriate tolerance. You may want to spend a little time familiarizi…

Bassist, Do you want the arcs to become segments or are you complaining that they are? To expand on what John said, there are options in the export schemes to either preserve arcs, etc. or to convert them depending on your needs. Nick

I suspect Bassist using the placeholder “Default” export scheme that converts everything to flat, segmented polylines based on a 20 degree deflection angle.

I tried CAM imperial with multiple options but still both curves and circles change to segments. My 2d drawing has many .125 diameter circles, no mater what scheme options I choose, still end up as octagons in the DWG file. Note: this is my first time trying to save as a DWG so I’m very “green” at i…

[image] John_Brock: I suspect Bassist using the placeholder “Default” export scheme that converts everything to flat, segmented polylines based on a 20 degree deflection angle Well, here anyway, arcs and circles stay arcs and circles in the Default Export DXF scheme. He may have used 2004 po…

[image] bassist: I tried CAM imperial with multiple options but still both curves and circles change to segments. My 2d drawing has many .125 diameter circles, no mater what scheme options I choose, still end up as octagons in the DWG file. Note: this is my first time trying to save as a DWG so …

I’ve attached 125_circle.3dm with a 1/8" diameter circle in it and 125_circle.dwg made from it using the CAM Imperial export scheme. I’ve also included a screenshot of the settings in CAM Imperial. This DWG file should open in AutoCAD as a circle 125_circle.3dm (22.3 KB) 125_circle.dwg (17.1 KB) […

I don’t know. Does the DWG file I sent open correctly in this “trueview” tool? It opens correctly in AutoCAD itself. Years ago, in AutoCAD itself, there was a command called ViewRes (I think). It’s been 25+ years… That had a similar effect on the display of circles. If you set the ViewRes to some…

Been moving lines, arcs and splines to Autodesk Fusion lately with success. Not sure if such translate to TrueView. While I did not experiment with most of the options, here is what worked. Explode any polylines (anything joined) and ungroup anything grouped Export DXF default

You can try regen command in AC… [image] Exporting Rhino curves to Autocad Goodday, When exporting a faired Rhino curve to Autocad, I get, whatever I do, a line that is build up out of strait segments while it still is one line. What am I doing wrong?

Save as .DWG - arcs become line segments and circles become octagons

Rhino Rhino for Windows

Helvetosaur June 10, 2015, 5:31pm 7

I just exported 100 .125 dia. circles with CAM Imperial and they are all circles on re-import to Rhino…

–Mitch

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Save as .DWG - arcs become line segments and circles become octagons

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